Dyeing and bleaching machine.



T. ALLSOP & W. W. SIBSON.

DYEING AND BLEACHING MACHINE.

APPLICATION FILED SEPT. 1a. 1916.

Patented NOV. 20,1917.

FIG I,

1W Timmas #1160111 wmzrzzzs n;

UNITED STATES PATENT 'GFFFIQE.

THOMAS ALLSOP AND VJALTER W. SIBSON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO THE PI-IILADELFHIA DRYING MACHINERY COMPANY, OF PHILA- DELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

' DYEING- AND BLEACI-IING IVIACI-IIN E.

Specification of LettersPatent. Patented NOV. 2%, 1917- Application filed September 18, 1916. Serial No. 120,614.

To all whom it may concern:

Be it known that we, THOMAS ALLsor and \VALTER IV. Snzson, residents of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have jointly invented certain new and useful Improvements in Dyeing and Bleaching Machines, whereof the following is a specification, reference being had to the accompanylng drawings.

Our invention relates to dyeing and bleaching machines of the type in which the dye liquor is heated by exposure to closed steam coils, as is particularly desirable in dyeing operations with delicate shades such that the escape of steam into the dye bath objectionably affects the operation because of the dilution due to condensation of steam.

According to our invention the steam pipes constitute a closed system so that there is no dilution of the dye liquor. These pipes are so situated in reference to the circulatory system to which the dye liquor is subjected as to be most efficient in properly heating the bath. At the same time they are so protected as to prevent the fabrics which are to be dyed from coming into direct contact with said steam pipes. Accordingly in our invention the steam pipes are introduced within a larger outer pipe which itself forms part of the circulatory system for the dye liquor.

In order to utilize to the highest extent the heat radiated from the pipe inclosing the steam pipes the large pipe which contains them may traverse the lower part of the dye receptacle and constitute the exit pipe by which the dye liquor is continuously drawn off from the receptacle to be subsequently returned thereto in maintenance of the circulation.

In the accompanying drawings, Figure I, is a sectional view of the lower part of the dyeing and bleaching vat illustrating the application of our invention thereto.

Fig. II, is a similar section showing a slight modification.

Fig. III, is a cross sectional view along the line III, III, in Fig. I, or Fig. II.

The dyeing receptacle 1, contains near its bottom a large apertured guard pipe 2. This pipe extends preferably from one end of the receptacle to the other supported by the walls of the receptacle. At its open end, this pipe communicates with a pump (not shown), by which the dye liquor is continuously withdrawn from the receptacle, by way of the pipe 2, and continuously returned to it by a supply pipe, not shown. The other end of the pipe 2, is closed by a cap plate 5. ported steam pipes 6, 6, one of which may form a direct return pipe, as in Fig. I, or may be independent of the other as in Fig. II. The steam pipes 6, 6, are supported within the pipe 2, by means of spiders 8, 8, attached to the steam pipes and reaching to the sides of the guard pipe 2. The pipe 2, is apertured preferably along several lines, as by the perforations 9, 9, 9,.shown in Fig. III.

In operation the dye liquor is drawn into the pipe 2, by the pump and heated by direct contact with steam pipes 6. After completing its circulation the dye liquor is returned to the receptacle by a supply pipe, not shown. The pipe 2, enveloping the steam pipe effectually prevents the goods immersed within the dye liquor from com-- ing into injurious contact with the steam pipes.

By this device a more even heating of the dye liquor is secured than has been previously accomplished. Instead of one portion of the liquor in the receptacle being raised to a higher temperature than others, which obj ectionably affects the dyeing operation and results in streaky goods, the contents of the receptacle are maintained at a substantially constant temperature. It will be understood that although we have shown the steam pipe as inserted in that portion of the circulatory system which constitutes the eXit pipe, by which the dye liquor is withdrawn from the receptacle, yet if desired the steam pipes may be inserted in another portion of the pipe by which the circulation is accomplished. In either case the advantage of even heating of the dye liquor and protection of the goods from direct exposure to the steam pipe is secured.

Within the pipe 2, are sup-.

Having thus described our invention, we

outlet pipe which enters the receptacle, and a closed steam pipe contained Within that part of the outlet pipe Which is Within the receptacle.

2. In a dyeing machine, the combination of the dyeing receptacle, a large apertured pipe supported Within the same, and between the Walls thereof, a closed steam pipe received Within the large apertured pipe, and means including a piping system Whereby the dye liquor entering the large perforated pipe, is continuously Withdrawn therefrom, and returned to another part of the dyeing receptacle.

In testimony Whereof We have hereunto 15 signed our names at Philadelphia, Pennsylvania, this twelfth day of September, 1916.

THOMAS ALLSOP. i WALTER W. SIBSON.

Witnesses JAMEs H. BELL, E. L. FULLERTON.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patenta. Washington, D. C. 

